public class ForDemo1 {
    public static void main(String[] args) {
        // for(初始化语句;循环条件;迭代语句)
        // for循环快捷键fori
        // 最常用
        System.out.println("----3次Hello World----");
        for (int i = 0; i < 3; i++) {
            //i = 0,i = 1,i = 2
            System.out.println("Hello World");
        }
        System.out.println("----4次Hello MySQL----");
        for (int i = 1; i < 5; i++) {
            //i = 1,i = 2,i =3,i = 4
            System.out.println("Hello MySQL");
        }
        System.out.println("----5次Hello MySQL----");
        for (int i = 1; i <= 5; i++) {
            //i = 1,i = 2,i =3,i = 4,i=5
            System.out.println("Hello MySQL");
        }
        System.out.println("----3次Hello Redis----");
        for (int i =1;i <=5;i +=2){
        //i=1,i=3,i=5
        System.out.println("Hello Redis");}
    }
}